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Manuel Stoeckl edb30a6828 Implement serial validation for selection requests
This change tracks, for each wlr_seat_client, the most recent serial
numbers which were sent to the client. When the client makes a
selection request, wlroots now verifies that the serial number
associated with the selection request was actually provided to that
specific client. This ensures that the client that was most
recently interacted with always has priority for its copy selection
requests, and that no other clients can incorrectly use a larger serial
value and "steal" the role of having the copy selection.

Also, the code used to determine when a given selection is superseded
by a newer request uses < instead of <= to allow clients to make
multiple selection requests with the same serial number and have the
last one hold.

To limit memory use, a ring buffer is used to store runs of sequential
serial numbers, and all serial numbers earlier than the start of the
ring buffer are assumed to be valid. Faking very old serials is
unlikely to be disruptive.

Assuming all clients are correctly written, the only additional
constraint which this patch should impose is that serial numbers
are now bound to seats: clients may not receive a serial number
from an input event on one seat and then use that to request
copy-selection on another seat.
2019-06-30 15:01:05 -04:00
.builds Test RDP backend on FreeBSD as well 2019-05-03 20:00:45 +03:00
backend backend: drm: switch to pageflip_handler_2 2019-06-27 00:17:27 +00:00
docs Remove WLR_DRM_NO_ATOMIC_GAMMA workaround 2019-06-11 08:52:34 +03:00
examples Remove orbital screenshooter and gamma-control 2019-06-02 09:30:47 -04:00
include Implement serial validation for selection requests 2019-06-30 15:01:05 -04:00
protocol Support pointer-gestures on Wayland backend 2019-06-21 14:43:28 -04:00
render render/dmabuf: add wlr_dmabuf_attributes_copy 2019-06-07 09:06:11 -04:00
rootston rootston: add support for direct scan-out 2019-06-07 09:06:11 -04:00
tinywl output: refactor frame submission API 2019-04-23 14:34:30 -06:00
types Implement serial validation for selection requests 2019-06-30 15:01:05 -04:00
util Use a set to track pointer button state. 2019-06-16 00:59:53 +03:00
xcursor xcursor: Support XDG user data dir location 2018-11-27 23:21:07 +01:00
xwayland Implement serial validation for selection requests 2019-06-30 15:01:05 -04:00
.editorconfig Set .editorconfig ident_size 2019-01-25 11:37:46 +01:00
.gitignore Add build-*/ to gitignore. 2019-02-04 14:37:16 +01:00
CONTRIBUTING.md util: add wlr_ prefix to log symbols 2018-07-09 22:49:54 +01:00
LICENSE Update LICENSE year (MIT license) 2018-04-12 21:29:59 -04:00
README.md Update READMEs per tinywl merge 2019-01-03 10:10:03 -05:00
glgen.sh Fix missing headers when building without X11 2019-04-22 00:04:08 +03:00
meson.build Update version to 0.6.0 2019-05-03 11:55:46 -04:00
meson_options.txt Add FreeRDP backend for remote desktop support 2019-04-08 08:09:07 -06:00
wlroots.syms Remove symbol versioning from DSO 2018-07-20 11:09:56 +01:00

README.md

wlroots

Pluggable, composable, unopinionated modules for building a Wayland compositor; or about 50,000 lines of code you were going to write anyway.

  • wlroots provides backends that abstract the underlying display and input hardware, including KMS/DRM, libinput, Wayland, X11, and headless backends, plus any custom backends you choose to write, which can all be created or destroyed at runtime and used in concert with each other.
  • wlroots provides unopinionated, mostly standalone implementations of many Wayland interfaces, both from wayland.xml and various protocol extensions. We also promote the standardization of portable extensions across many compositors.
  • wlroots provides several powerful, standalone, and optional tools that implement components common to many compositors, such as the arrangement of outputs in physical space.
  • wlroots provides an Xwayland abstraction that allows you to have excellent Xwayland support without worrying about writing your own X11 window manager on top of writing your compositor.
  • wlroots provides a renderer abstraction that simple compositors can use to avoid writing GL code directly, but which steps out of the way when your needs demand custom rendering code.

wlroots implements a huge variety of Wayland compositor features and implements them right, so you can focus on the features that make your compositor unique. By using wlroots, you get high performance, excellent hardware compatibility, broad support for many wayland interfaces, and comfortable development tools - or any subset of these features you like, because all of them work independently of one another and freely compose with anything you want to implement yourself.

Check out our wiki to get started with wlroots.

wlroots is developed under the direction of the sway project. A variety of wrapper libraries are available for using it with your favorite programming language.

Building

Install dependencies:

  • meson
  • wayland
  • wayland-protocols
  • EGL
  • GLESv2
  • libdrm
  • GBM
  • libinput
  • xkbcommon
  • udev
  • pixman
  • systemd (optional, for logind support)
  • elogind (optional, for logind support on systems without systemd)
  • libcap (optional, for capability support)

If you choose to enable X11 support:

  • xcb
  • xcb-composite
  • xcb-xfixes
  • xcb-xinput
  • xcb-image
  • xcb-render
  • x11-xcb
  • xcb-errors (optional, for improved error reporting)
  • x11-icccm (optional, for improved Xwayland introspection)

Run these commands:

meson build
ninja -C build

Install like so:

sudo ninja -C build install

Contributing

See CONTRIBUTING.md.